A study of one-prong Tau decays with a charged kaon

UNSPECIFIED (2001) A study of one-prong Tau decays with a charged kaon. European Physical Journal C: Particles and Fields, 19 (4). pp. 653-665. ISSN 1434-6044

Abstract

From an analysis of the ionisation energy loss of charged particles selected from 110326 e+e−→τ+τ− candidates recorded by the OPAL detector at e+e− centre-of-mass energies near the Z0 resonance, we determine the one-prong tau decay branching ratios: Br(τ − → ντK− ≥ 0h0) = (1.528 ± 0.039 ± 0.040)% Br(τ −→ντ K−) = (0.658 ± 0.027 ± 0.029)% where the h0 notation refers to a π0, an η, a K0S, or a K0L, and where the first uncertainty is statistical and the second is systematic.